旧项目上的Jetty和Jersey 404错误

问题描述

作为我工作的一部分，我正在尝试更新一些服务，并且其中一项正在与Jetty＆Jersey一起部署。不幸的是，代码很旧（某些依赖项来自2014年），并且在编译和启动服务器时，每当我使用mvn jetty:run从IDE运行它时，根目录都会正确显示Directory /消息，而对于其他所有网址，我都收到错误404 NOT FOUND。

我在控制台上没有收到任何警告/错误消息，也找不到发生这种情况的原因。我已经搜索了很多东西，但是代码似乎是正确的，唯一缺少的是web.xml，但是我认为Jetty是嵌入式的，我需要提到的是该代码已经作为JAR在生产环境中运行了。 / p>

下面您可以看到一些文件：

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.sample</groupId>
    <artifactId>sample</artifactId>
    <version>2.0</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.2.2.v20140723</version>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.21</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.21</version>
        </dependency>

        <dependency>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-server</artifactId>
            <version>9.2.3.v20140905</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-servlet</artifactId>
            <version>9.2.3.v20140905</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-server</artifactId>
            <version>2.7</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet-core</artifactId>
            <version>2.7</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-jetty-http</artifactId>
            <version>2.7</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet</artifactId>
            <version>2.7</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-moxy</artifactId>
            <version>2.7</version>
        </dependency>

        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20160212</version>
        </dependency>

    </dependencies>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

</project>

引用以下类来启动服务器：
ApiService.java


import com.simple.api.restendpoint.*;
import org.apache.log4j.Logger;
import org.eclipse.jetty.http.HttpVersion;
import org.eclipse.jetty.server.*;
import org.eclipse.jetty.server.handler.IPAccessHandler;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.util.ssl.SslContextFactory;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.servlet.ServletContainer;

import java.util.HashSet;
import java.util.Set;


public class ApiService {
    Logger log = Logger.getLogger(ApiService.class);
    
    private static ApiService instance;
    private final Server server;

    private ApiService(){
        //CREATE CONFIG
        Set<Class<?>> s = new HashSet<>();
        s.add(restEndpoint.class);      

        ResourceConfig config = new ResourceConfig(s);

        //CREATE CONTAINER
        ServletContainer container = new ServletContainer(config);

        //CREATE CONTEXT
        ServletContextHandler context = new ServletContextHandler();
        context.setContextPath("/");
        context.addServlet(new ServletHolder(container),"/*");

        //CREATE RPC SERVER
        QueuedThreadPool threadPool = new QueuedThreadPool();
        threadPool.setMaxThreads(50);
        server = new Server(threadPool);

        server.setHandler(context);

        ServerConnector connector = new ServerConnector(server);
        connector.setPort(8080);

        server.addConnector(connector);

        SslContextFactory sslContextFactory = new SslContextFactory();
        sslContextFactory.setKeyStorePath("testkeystore");
        sslContextFactory.setKeyStorePassword("testkeystore");
        sslContextFactory.setKeyManagerPassword("testkeystore");

        // SSL HTTP Configuration
        HttpConfiguration https_config = new HttpConfiguration();
        https_config.addCustomizer(new SecureRequestCustomizer());

        // SSL Connector
        ServerConnector sslConnector = new ServerConnector(server,new SslConnectionFactory(sslContextFactory,HttpVersion.HTTP_1_1.asString()),new HttpConnectionFactory(https_config));
        sslConnector.setPort(Settings.getInstance().getRpcPort());
        server.addConnector(sslConnector);
        
    }

    public static ApiService getInstance() {
        if (instance==null) {
            instance = new ApiService();
        }
        return instance;
    }

    public void start() {
        try {
            //START RPC 
            server.start();
            server.join();
            log.info("Server started");
        }
        catch (Exception e) {
            //FAILED TO START RPC
            log.error("Error starting server");
        } finally {
            server.destroy();
        }
    }
}

restEndpoint.java

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.Suspended;
import javax.ws.rs.core.Context;
import org.apache.log4j.Logger;
import org.json.JSONArray;
import org.json.JSONObject;

@Path("/v4/restEndpoint")
@Produces({"application/json"})
public class restEndpoint {
    Logger log = Logger.getLogger(restEndpoint.class);

    private static final String VERSION = "v4";

    private static final ExecutorService executors = Executors.newFixedThreadPool(20);

    @Context
    HttpServletRequest request;

    @GET
    @Path("/getsamplejson")
    public void getSampleJson(@Suspended final AsyncResponse asyncResponse) {
        executors.execute(new Runnable() {
            @Override
            public void run() {
                String result = veryExpensiveOperation();
                asyncResponse.resume(result);
            }

            private String veryExpensiveOperation() {
                JSONObject sampleJson = new JSONObject().put("test",0);
                return sampleJson.toString();
            }
        });
    }
}

知道为什么会发生吗？ http://localhost:8080/v4/restEndpoint/getsamplejson返回404 NOT FOUND http://localhost:8080/显示Directory: /

我应该尝试将其构建为JAR并通过它运行它，而不是使用mvn jetty:run命令吗？

解决方法

您有一个从代码开始的嵌入式码头实例。

您提供的ApiService来源证明了这一点。

您不能使用jetty-maven-plugin来管理/启动/运行该类。

jetty-maven-plugin专门用于Web应用程序，既可以作为WAR打包文件，也可以作为分解的Webapp目录使用。（Web应用程序中将包含WEB-INF / web.xml和/或带有Servlet注释的类）

您将需要使用项目唯一的其他方式（可能是某种主类或测试用例）启动服务器，最终实例化ApiService并在其上调用.start()。

embedded-jetty java java jersey jersey-2.0 jetty

旧项目上的Jetty和Jersey 404错误

问题描述

解决方法

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